Question

Gas being produced by paddy fields and involved in global warming is-
A. Chlorine
B. Methane
C. $C{O_2}$
D. ${H_2}S$

Answer 1

A paddy field is a type of waterlogged field of cultivable land where semiaquatic crops, like rice, are cultivated. Various types of microscopic organisms are found to be present in the field of land. Due to their respiration and other biological activities, different types of gaseous products are produced by the microbes.

Complete answer:
Paddy fields are arable land where paddy is cultivated. It is one type of flooded field. In the paddy field, various types of microscopic organisms are found. In the field of land, different types of gaseous products generate due to the respiration of these microbes.
Paddy or rice fields are considered as one of the highest and important sources of global warming. Day by day, the paddy field becomes a major contributor to climate change. Due to the increasing population, rice as an important food need are also increasing rapidly. This creates a disruption and over burden on the natural ecosystem causes rapid increase in global warming.
The microorganisms found in the paddy field due to respirational activities release carbon dioxide as a by-product. When the amount of carbon dioxide increases in the area of cultivated fields, the temperature of the field area also increases which causes the production of methane. Further, due to combination with carbon dioxide, methane becomes a very strong greenhouse gas. This methane causes a massive rise in global temperature. Methane is the gas produced by the paddy fields that are involved in global warming.
The chlorine is found dissolved in the water especially the water that is used for drinking purposes. If a high quantity of chlorine containing water is consumed then it can cause various health complications such as burning of skin and irritation of the mucous membrane of certain organs. Chlorine is harmful but it does not play any role in global warming.
Carbon dioxide is also a major factor in global warming. It mainly comes in the nature from the smoke and the respiration of animals. Though a little amount of $C{O_2}$ releases due to the respiration of microbes present in the paddy field, later it combines and releases methane.
Hydrogen sulfide is an inorganic calcogenic hybrid gas produced commonly due to during the drilling and production of crude oil and natural gas. It is also produced in wastewater treatment.

Therefore, the correct option is option B.

Note: In the present day, paddy fields are considered as the major factor of climate change as methane like powerful global warming generates from the paddy field. Microbes present in the field respire and produce carbon dioxide. Later carbon dioxide reacting with other elements transformed into methane.